1 How to write: from the upper right corner to the lower left corner.
How to write 2: Touch the line on the left from the pen, then touch the line up to the right to form a semicircle slightly, diagonally to the lower left corner, and touch the line horizontally.
How to write 3: Start the pen without touching the line, and touch the line upward. Don't touch the line to the right, form a semicircle slightly (smaller than the semicircle at the upper end of 2), then go to the middle, stop above the dotted line, turn to the lower right to touch the line, touch the line down and bend to the left to touch the line. There is more than half a circle up and down, but the bottom is bigger than the top.
How to write: Draw a diagonal line to the left from the middle of the upper line to the lower box 1/3, and then cross it after touching the left line, and touch the right line. The second stroke goes straight down from the top right without touching the right line, but touching the bottom line below.
The writing method of 5: from the upper left line to the left, slightly to the upper corner of the middle grid, and then to the right, draw a large semicircle beyond the center line to touch the right line, and the lower limit to touch the left line. The upper line is a little below the upper line and touches the right line to the right.
How to write 6: Draw an arc from the upper line to the right and the lower left, touch the left line and the bottom line, and then draw a small circle upward. The small circle exceeds the dotted line, so you can't write the circle too small.
How to write: level the upper line, from the upper left corner to the upper right corner, and then bend it diagonally to the end, touching the left line in the middle.
8 How to write: It is semicircular from right up to left, and the other one is from right down. Touch the right line, off line and left line, then go up, intersect the original line above the dotted line, and go straight until it is slightly away from the writing place near the upper right corner. (8 unsealed)
How to write: the upper circle is long and slightly inclined, but the four corners touch the line and go down to the left near the upper right corner to the middle of the lower line.
10: From the middle of the upper line, make an arc to contact the left line, make an arc to contact the lower line, make an arc to contact the right line upwards, and make an arc to intersect the starting point upwards.
Arabic digital history
Around 500 AD, with the rise and development of economy, culture and Buddhism, Punjab in the northwest of Indian subcontinent has been in a leading position in mathematics, which originated in India.
Astronomer Ayepihite made a new breakthrough in simplifying numbers: he recorded the numbers with a grid. If there is a symbol in the first grid, such as a point representing 1, then the same point in the second grid represents ten, and the point in the third grid represents one hundred.
In this way, not only the digital symbols themselves, but also their position order is of great significance. Indian scholars also introduced the symbol zero. It can be said that these symbols and representations are the old ancestors of Arabic numerals today.